Support creating mojo peer connections from named pipes.

mojo/edk/embedder/named_platform_handle_utils_posix.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/edk/embedder/named_platform_handle_utils.h"
+
+#include "base/files/file_path.h"
+#include "ipc/unix_domain_socket_util.h"
+#include "mojo/edk/embedder/named_platform_handle.h"
+
+namespace mojo {
+namespace edk {
+
+ScopedPlatformHandle CreateClientHandle(
+    const NamedPlatformHandle& named_handle) {
+  if (!named_handle.is_valid())
+    return ScopedPlatformHandle();
+
+  int fd;
+  IPC::CreateClientUnixDomainSocket(base::FilePath(named_handle.name), &fd);
+  return ScopedPlatformHandle(PlatformHandle(fd));
+}
+
+ScopedPlatformHandle CreateServerHandle(const NamedPlatformHandle& named_handle,
+                                        bool enforce_uniqueness) {
+  CHECK(!enforce_uniqueness);
+  if (!named_handle.is_valid())
+    return ScopedPlatformHandle();
+
+  int fd;
+  IPC::CreateServerUnixDomainSocket(base::FilePath(named_handle.name), &fd);
+  PlatformHandle handle(fd);
+  handle.needs_connection = true;
+  return ScopedPlatformHandle(handle);
+}
+
+}  // namespace edk
+}  // namespace mojo